#4 Rey Mysterio
As mentioned in the previous slide, the next man who has the potential to give the US Title its glory days back is - Rey Mysterio!
Since making his return last year, the King of 619 has been performing at the top level, giving some of the best matches on WWE television. Looking at his agility and athleticism inside the ring, it's very hard to believe that this guy is 44 years old.
If given a chance, Rey Mysterio would prove to be a great United States Champion in the current scenario. Being constantly carried by heels like Shinsuke Nakamura, Rusev etc, the title needs a top babyface champ whom the audience can get behind and cheer (sorry R-Truth, I'm not talking about you).
I love the concept of US Title Open Challenges and seeing Rey Mysterio continue the trend would make it even more interesting. Imagine the likes of Ricochet, Aleister Black, AJ Styles going one on one with Mysterio for the title.